NSO Level 1- Science Olympiad (SOF) Class 8: Questions 927 - 931 of 1076

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Passage

Image of Different Picture

Image of Different Picture

Image of Different Picture

Question number: 927 (3 of 4 Based on Passage) Show Passage

» Sound

Edit
MCQ▾

Question

Which of this musical instrument is a reed instrument?

Choices

Choice (4) Response

a.

Figure D

b.

Figure A

c.

Figure C

d.

Figure B

Question number: 928 (4 of 4 Based on Passage) Show Passage

» Sound

Edit
MCQ▾

Question

In Figure D, sound is produced by the vibration of

Choices

Choice (4) Response

a.

Stretched membrane

b.

String

c.

Air column

d.

Reed

Question number: 929

» Friction

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Appeared in Year: 2012

Assertion-Reason▾

Question

Assertion (Ꭺ)

when a bicycle is in motion the force of friction exerted by the ground on the two wheels is always in forward direction.

Reason (Ꭱ)

The frictional force acts only when the bodies are in contact.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 930

» Chemical Effects of Electric Current

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MCQ▾

Question

Chemical reactions taking place in a conducting solution by the passage of electricity is called

Choices

Choice (4) Response

a.

Electrical effect of chemical substance

b.

Chemical effect of electric current

c.

Chemical change due to electric current

d.

Question does not provide sufficient data or is vague

Question number: 931

» Some Natural Phenomena

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MCQ▾

Question

In the above experiment, when he brought the refill near a balloon and observed that they came close to each other. From this experiment he concluded that

Choices

Choice (4) Response

a.

Like charges attract

b.

Unlike charges repel

c.

Unlike charges attract

d.

Like charges repel

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